I have a kegerator that currently holds 4 cornies. Ima set it up on a platform in the basement and run lines up to the kitchen above for taps on the wall (badass, I know). In working through the math to figure out tap line diameter and length I've had trouble deciding what carb level I want to set the system up for. Obviously this plays a big role in serving pressures soooooooo, I'm thinking this.... One line set up for 14psi, 2 lines set up for 10-12 and a line for the stout faucet. that probably means two 3/16 and two 1/4. Generally I'll always have something on the stout faucet. Always have a lightish or wheat beer and two middle of the road or low carbed beers in the other two. What would be the disadvantage?

There's no real disadvantage, except you have to deal with two different sizes of line and the fittings for those sizes. Other than that I say go for it. Most commercial installs only put in one line size. When in doubt the smaller size is probably better, because a slow pour is better than a fast foamy pour

The only thing between me and a train wreck is blind luck..... - Kenny

There's no real disadvantage, except you have to deal with two different sizes of line and the fittings for those sizes. Other than that I say go for it. Most commercial installs only put in one line size. When in doubt the smaller size is probably better, because a slow pour is better than a fast foamy pour

I mean, ideally I would just buy flow control faucets and run a larger lines. But you know, monies.